Finding the Fourth Proportional to 21,685.22, 32,532.42 and 8,358.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,685.22 : 32,532.42 = 8,358.56 : x
2. Step 2: Convert to fraction form
   21,685.22/32,532.42 = 8,358.56/x
3. Step 3: Cross multiply
   21,685.22x = 32,532.42 × 8,358.56
4. Step 4: Simplify right side
   21,685.22x = 271,924,184.52
5. Step 5: Solve for x
   x = 271,924,184.52/21,685.22
6. Step 6: Final answer
   x = 12,539.61